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font-patcher: Fix ScaleRule evaluation

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[why]
In some cases only some ScaleRule glyphs are used.

[how]
Store mixture of integers and ranges for ScaleGlyph (as is done for
ScaleGroups).

Correctly evaluate mixture of integers and ranges.

[note]
Came up with PR #773

Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>
This commit is contained in:
Fini Jastrow 2023-01-06 23:40:38 +01:00
parent a56a4fad8e
commit 05a9ec8b6d
1 changed files with 10 additions and 6 deletions
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14
font-patcher
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@ -1303,15 +1303,15 @@ class font_patcher:
if 'ScaleGlyph' in scaleRules:
# Rewrite to equivalent ScaleGroup
flat_list = []
group_list = []
for i in scaleRules['GlyphsToScale']:
if isinstance(i, tuple):
flat_list += list(range(i[0], i[1] + 1))
group_list.append(range(i[0], i[1] + 1))
else:
flat_list.append(i)
group_list.append(i)
sym_dim = get_glyph_dimensions(symbolFont[scaleRules['ScaleGlyph']])
scale = self.get_scale_factor(sym_dim)
scaleRules['ScaleGroups'].append(flat_list)
scaleRules['ScaleGroups'].append(group_list)
scaleRules['scales'].append(scale)
scaleRules['bbdims'].append(None) # The 'old' style keeps just the scale, not the positioning
@ -1323,7 +1323,11 @@ class font_patcher:
self.sourceFont.createChar(dest_unicode)
self.prepareScaleRules(scaleRules, symbolFont, self.sourceFont[dest_unicode])
for glyph_list, scale, box in zip(scaleRules['ScaleGroups'], scaleRules['scales'], scaleRules['bbdims']):
if symbol_unicode in glyph_list:
for e in glyph_list:
if isinstance(e, range):
if symbol_unicode in e:
return (scale, box)
elif symbol_unicode == e:
return (scale, box)
return None